Toshiko–Mariano Quartet (in West Side) is a jazz album by pianist Toshiko Akiyoshi and alto saxophonist Charlie Mariano and was recorded in Tokyo in 1963 and released on the Nippon Columbia/Takt label. This album is related to the similar RCA Mariano/Akiyoshi release, East and West but is not to be confused with the 1961 Candid recording, The Toshiko–Mariano Quartet.